:root {
  --ink: #102033;
  --muted: #607086;
  --line: #dde5ee;
  --soft: #f5f7fa;
  --panel: #ffffff;
  --navy: #0b2f55;
  --navy-2: #123f6d;
  --steel: #c8d1da;
  --silver: #eef2f5;
  --accent: #0f8b8d;
  --gold: #b88a32;
  --shadow: 0 18px 45px rgba(16, 32, 51, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  background: #fff;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

.container {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  background: var(--navy);
  color: rgba(255, 255, 255, 0.86);
  font-size: 13px;
}

.topbar .container {
  min-height: 38px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.header-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: 0;
}

.brand-mark {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #fff;
  background: linear-gradient(135deg, var(--navy), var(--accent));
  font-size: 18px;
}

.brand small {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.nav {
  display: flex;
  align-items: center;
  gap: 2px;
  font-size: 15px;
}

.nav a {
  padding: 10px 12px;
  border-radius: 6px;
  color: #26384d;
}

.nav a:hover,
.nav a.active {
  background: var(--silver);
  color: var(--navy);
}

.menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
  color: var(--navy);
  font-size: 22px;
}

.hero {
  min-height: 620px;
  color: #fff;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(90deg, rgba(6, 29, 51, 0.92), rgba(6, 29, 51, 0.68), rgba(6, 29, 51, 0.22)),
    repeating-linear-gradient(115deg, #677888 0, #677888 2px, #9aa8b4 2px, #9aa8b4 11px);
}

.hero::after {
  content: "此处后续替换为工厂外景、车间全景或产品实拍图。";
  position: absolute;
  right: 32px;
  bottom: 28px;
  max-width: 330px;
  padding: 12px 16px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 6px;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(9, 23, 38, 0.58);
  font-size: 14px;
}

.hero-content {
  max-width: 760px;
  position: relative;
  z-index: 1;
}

.eyebrow {
  color: var(--accent);
  font-weight: 800;
  letter-spacing: 0;
  margin: 0 0 12px;
}

.hero .eyebrow {
  color: #79d5d1;
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.18;
}

h1 {
  font-size: clamp(42px, 6vw, 74px);
  letter-spacing: 0;
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
}

h3 {
  font-size: 21px;
}

.lead {
  font-size: 18px;
  color: var(--muted);
}

.hero .lead {
  max-width: 640px;
  margin: 22px 0 28px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 20px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 20px;
  border-radius: 6px;
  border: 1px solid transparent;
  font-weight: 750;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.btn-light {
  color: var(--navy);
  background: #fff;
  border-color: var(--line);
}

.section {
  padding: 82px 0;
}

.section.soft {
  background: var(--soft);
}

.section-head {
  max-width: 780px;
  margin-bottom: 34px;
}

.grid {
  display: grid;
  gap: 22px;
}

.grid-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 10px 30px rgba(16, 32, 51, 0.05);
}

.metric {
  min-height: 160px;
}

.metric strong {
  display: block;
  color: var(--navy);
  font-size: 30px;
  line-height: 1.1;
  margin-bottom: 10px;
}

.placeholder {
  min-height: 190px;
  display: grid;
  place-items: center;
  padding: 18px;
  border: 1px dashed #aab7c5;
  border-radius: 8px;
  color: #43576d;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(238, 242, 245, 0.92), rgba(255, 255, 255, 0.92)),
    repeating-linear-gradient(45deg, #d6dee7 0, #d6dee7 1px, transparent 1px, transparent 12px);
}

.product-card {
  padding: 0;
  overflow: hidden;
}

.product-card .placeholder {
  min-height: 220px;
  border: 0;
  border-radius: 0;
}

.product-card .body {
  padding: 24px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 18px 0 0;
  list-style: none;
}

.tag-list li {
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: #34485f;
}

.note {
  padding: 14px 16px;
  border-left: 4px solid var(--gold);
  background: #fff8ea;
  color: #5f4b20;
  border-radius: 6px;
}

.page-hero {
  padding: 86px 0;
  color: #fff;
  background:
    linear-gradient(90deg, rgba(8, 36, 63, 0.95), rgba(18, 63, 109, 0.82)),
    repeating-linear-gradient(120deg, #687986 0, #687986 1px, #99a6b1 1px, #99a6b1 12px);
}

.breadcrumb {
  color: rgba(255, 255, 255, 0.72);
  margin-bottom: 14px;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 34px;
  align-items: start;
}

.table {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.table th,
.table td {
  border-bottom: 1px solid var(--line);
  padding: 14px 16px;
  text-align: left;
  vertical-align: top;
}

.table th {
  width: 180px;
  color: var(--navy);
  background: var(--silver);
}

.table tr:last-child th,
.table tr:last-child td {
  border-bottom: 0;
}

.footer {
  color: rgba(255, 255, 255, 0.82);
  background: #071f37;
  padding: 54px 0 26px;
}

.footer h3,
.footer strong {
  color: #fff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 28px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
}

.footer a {
  display: block;
  margin: 8px 0;
  color: rgba(255, 255, 255, 0.78);
}

.copyright {
  margin-top: 22px;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.62);
}

@media (max-width: 980px) {
  .menu-toggle {
    display: block;
  }

  .nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 77px;
    display: none;
    padding: 14px 20px 20px;
    background: #fff;
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    flex-direction: column;
    align-items: stretch;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 12px;
  }

  .grid-3,
  .grid-4,
  .footer-grid,
  .split {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 680px) {
  .container {
    width: min(100% - 28px, 1180px);
  }

  .topbar .container {
    align-items: flex-start;
    flex-direction: column;
    padding: 9px 0;
    gap: 4px;
  }

  .hero {
    min-height: 560px;
  }

  .hero::after {
    left: 14px;
    right: 14px;
    bottom: 16px;
  }

  .section {
    padding: 58px 0;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .footer-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .table th,
  .table td {
    display: block;
    width: 100%;
  }

  .table th {
    border-bottom: 0;
  }
}